Set - 1

Question 81 :

What are roles? How can we implement roles ?

Answer :

Roles are the easiest way to grant and manage common privileges needed by different groups of database users. Creating roles and assigning provides to roles. Assign each role to group of users. This will simplify the job of assigning privileges to individual users.

Question 82 :

What are Roles ?

Answer :

Roles are named groups of related privileges that are granted to users or other roles.

Question 83 :

What are the use of Roles ?

Answer :

REDUCED GRANTING OF PRIVILEGES - Rather than explicitly granting the same set of privileges to many users a database administrator can grant the privileges for a group of related users granted to a role and then grant only the role to each member of the group.
DYNAMIC PRIVILEGE MANAGEMENT - When the privileges of a group must change, only the privileges of the role need to be modified. The security domains of all users granted the group's role automatically reflect the changes made to the role.
SELECTIVE AVAILABILITY OF PRIVILEGES - The roles granted to a user can be selectively enable (available for use) or disabled (not available for use). This allows specific control of a user's privileges in any given situation.
APPLICATION AWARENESS - A database application can be designed to automatically enable and disable selective roles when a user attempts to use the application.

Question 84 :

What is Privilege Auditing ?

Answer :

Privilege auditing is the auditing of the use of powerful system privileges without regard to specifically named objects.

Question 85 :

What is Object Auditing ?

Answer :

Object auditing is the auditing of accesses to specific schema objects without regard to user.